Improvement in dies and punches for forming the eyes of adzes



Z Sheets-Sheet 1. 'L. CHAPMAN;

DIES AND PUNCHES FOR FORMING THE EYES 0F ADZES. No.172,256. PatentedJ'an.18, 1876.

a W W M MWM WW in canes, flag/Pia for;

.ZWQ a /WWW ZSheets-SheefiZ. L. CHAPMAN. DIES Am PUNCHES FOR Fonmm THEEYES OF ADZES. No.172,256. l Patented Jan. 18,1876,

l 'nnestreai fa ill/4M MPEIERS. PHOTO-LITHOGRAPNER. WASHINGXON D. C

UNITED STATEs LUKE CHAPMAN, 0F OOLLINSVILLE, CCNNECTICUT, Assrenon ToTHE PATENT OFFICE.

COLLINS COMPANY, OF SAME PLACE. I v

IMPROVEMENT IN DIES A ND PUNCHES FOR FORMING THE EYES OF ADZES.

Specification forming part of Letters Patent No. 172,256, dated January18, 1876; application filed February 24, 1875.

OAsE D.

To all whom it may concern:

Be it known that I, LUKE CHAPMAN, o Gollinsville, in the county ofHartford and State of Connecticut, have invented certain new and usefulImprovements pertaining to the manufacture of Solid -'Head Adzes, of

which the following is a specification,refer-' ence being had to theaccompanying drawing,

wherey Figure 1 is a face view of one of the two duplicate dies formingthe first set, showing the stock, after being operated on, inlongitudinal section. Fig. 2 is a face view of one of the two duplicatedies forming the second set, with the product of the first set (inlongitudinal section) inserted ready to be operated upon. Fig. 3 is aview the same as Fig. 2, except that the punch has advanced and done itswork. Fig. 4 is a view in cross-section of the second set of the dies,looking upon the top of stock after it has been operated upon. Across-section of the first set of dies appears substantially the same.Fig. 5 is a view of the product of the second set of dies. Fig. 6 is anenlarged view of the tool into which the forging shown in Fig. 5 isfinally worked.

These solid-head adzes .are usually made of iron or steel,or iron andsteel. The bar or stock of the appropriatesize is cut up into properlengths before manipulation, and the stock is properly heated beforesubmission to the dies. The dies are made to close together, face toface, by proper machinery with all the requisite force, and the punch isworked by proper machinery and with the requisite power. One end of thestocka is heated and then clamped between the first set of dies b,upsetting the stock and forcing an extra amount thereof into the matrixof the dies. This matrix is substantially rectangularin cross-section,and of the relative depth shown in Fig. 1. The punch c, circular incross-section, then comes forward or down to the position shown in Fig.1, making a corresponding hole in the stock, and causing the stock tofill the matrix. This stock is now taken out of this first set of diesand similarly clamped between,- and in the second setof dies (1 d, andthe additional stock piece 6 is dropped into place, it being previouslyproperly heated. This position of the parts is shown in Fig. 2. Thepunchf, rectangular in crosssection, and having a pyramidal point, nowadvances, as. shown in Fig. 3, and does its work, the lower part of thematrix of the dies being of a shape corresponding to the shape 01' thepoint of the punch, but with a shoulderat g. A cap-web, a, is left underor forward of the punch, which is partly severed from the stock by theaction of the punch 0n the shoulder g. The additional stock-piece ismerged into the stock by this operation. from these dies is shown inFig. 5. The capweb a is sawed off, and the forging is then worked intothe finished shape shown in Fig. 6. I intend to have other patents ondies and punches of even date hereWith-one marked OaseB and one marked(Jase E in the A former of which I show dies and punches for making eyesfor round or oval eyed adzes, and in the latter for making eyes forholes. These herein-described dies and punches diflier from the dies andpunches shown in both said cases in the shape of the punches and in theshape of the matrices of the dies, and I do not intend to cover andclaim herein dies or punches LUKE CHAPMAN. Witnesses:

WM. E. SrMoNDs, GEORGE E. NoLAN.

The forging which comes'

